Results 51 to 60 of about 19,251 (262)
Study of the turbulent mixing zone induced by the Richtmyer-Meshkov instability using Laser Doppler Velocimetry and Schlieren visualizations [PDF]
, 2012 An experimental study of the compressible mixing generated by the Richtmyer-Meshkov instability (RMI) is carried out in a vertical shock tube by means of two-components Laser Doppler Velocimetry (2C-LDV) measurements and Time-resolved Schlieren ...
Haas, Jean-François +4 more
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Corporate Social Responsibility and Environmental Management, EarlyView.ABSTRACT National and supranational institutions are establishing emission trading systems and control schemes in an attempt to manage stakeholders' willingness to engage with regulatory systems and reduce greenhouse gas emissions (GHG). Nonetheless, despite the national and supranational focus on carbon neutrality, little research has been centered ...
Daniele Giordino +3 more
wiley +1 more source
Átviteli hálózati alállomásokon alkalmazott SF6 szigetelésű megszakítók diagnosztikai vizsgálata
, 2022 Az alaphálózati alállomások üzemelő megszakítóinak, mint szerkezetnek, megszakító analizátor segítségével a pillanatnyi műszaki-üzemállapotának meghatározása mérések és vizsgálatok alapján.
György, Dávid
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Carbon emission assessment of tunnel infrastructures: From construction to operation
Deep Underground Science and Engineering, EarlyView.This study develops a lifecycle carbon accounting framework for tunnel infrastructures, covering design, construction, operation, maintenance, and dismantling. Applied to a subsea tunnel case, the framework reveals the carbon emission distribution among four typical tunnel types and highlights potential carbon offset methods for low‐carbon tunnel ...
Luyuan Long +4 more
wiley +1 more source
PtTe2 interface engineering for enhanced near‐infrared photoresponse in black silicon photodetectors
InfoMat, EarlyView.Highly responsive near‐infrared (NIR) photodetectors are essential for advanced photoelectric systems. In this work, a high‐responsivity NIR photodetector is developed by integrating a PtTe2/black silicon (B‐Si) heterostructure into a Si p‐i‐n diode, where B‐Si introduces sub‐bandgap defect states to enhance NIR absorption and the PtTe2 layer induces ...
Guanyu Mi +12 more
wiley +1 more source
Diffusion principles of SF6 tracer gas: constraints on SF6 mixing distance in mine tunnels
Scientific ReportsMine wind measurement work is an important task to ensure the normal operation of mine production and environmental safety. The traditional wind measurement method uses the average wind speed and average cross-sectional area of the tunnel to calculate ...
Fang Xu, Jian Liu, Dong Wang, Xue Liu
doaj +1 more source
Estudo das taxas de emissão de gás SF6 utilizando o método dos mínimos quadrados
, 2021 Este trabalho estuda as taxas de emissão de gás SF6 em três localidade brasileiras, através da aplicação do método dos mínimos quadrados. O método dos mínimos quadrados permite encontrar uma função que melhor se ajusta a um determinado conjunto de ...
Macedo, Laerte Marinho de
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JSFA reports, EarlyView.Abstract Background Livestock, especially ruminants, are a major source of global methane emissions, primarily produced by methanogenic archaea during enteric fermentation. We performed a systematic review and meta‐analysis to account for factors that could influence the relationship between ruminal methanogenic populations and methane emissions, such ...
Arlan Araujo Rodrigues +4 more
wiley +1 more source
Journal of Ultrasound in Medicine, EarlyView.Objectives To compare the application value of 4‐dimensional hysterosalpingo‐contrast sonography (4D‐HyCoSy) and x‐ray hysterosalpingography (HSG) in intrauterine insemination (IUI) patients. Methods In this retrospective study, a total of 725 infertile patients who underwent IUI in Ganzhou Maternal and Child Health Hospital from January 2023 to June ...
Yongyu Xie +3 more
wiley +1 more source
Gaoya dianqi, 2014 由于SF6气体的温室效应,减少SF6气体的使用具有深远的社会意义,用SF6/N2混合气体取代纯SF6气体作为高压电器设备的绝缘介质是减少使用SF6气体的有效措施。介绍了SF6/N2混合气体的优点。从气体放电理论出发,对不同比例SF6/N2混合气体的绝缘性能进行了分析,结果表明:SF6体积分数仅为20%的SF6/N2混合气体击穿强度为相同气体压力纯SF6的70%左右;若SF6体积分数为20%的SF6/N2混合气体的击穿强度要达到纯SF6气体的击穿强度,其总压力应为纯SF6气体的1.4倍 ...
牛文军, 魏俊梅, 张铎, 孙永恒
doaj